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CXXCBC-442: Add support for raw_json and raw_string transcoders (#514)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */ | ||
| /* | ||
| * Copyright 2024. Couchbase, Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| #pragma once | ||
|
|
||
| #include <couchbase/codec/codec_flags.hxx> | ||
| #include <couchbase/codec/encoded_value.hxx> | ||
| #include <couchbase/codec/transcoder_traits.hxx> | ||
| #include <couchbase/error_codes.hxx> | ||
|
|
||
| #include <cstddef> | ||
| #include <string> | ||
| #include <string_view> | ||
| #include <type_traits> | ||
| #include <vector> | ||
|
|
||
| namespace couchbase | ||
| { | ||
| #ifndef COUCHBASE_CXX_CLIENT_DOXYGEN | ||
| namespace core::utils | ||
| { | ||
| std::vector<std::byte> | ||
| to_binary(std::string_view value) noexcept; | ||
| } // namespace core::utils | ||
| #endif | ||
|
|
||
| namespace codec | ||
| { | ||
| class raw_json_transcoder | ||
| { | ||
| public: | ||
| template<typename Document, std::enable_if_t<std::is_same_v<Document, std::string> || std::is_same_v<Document, binary>, bool> = true> | ||
| static auto encode(const Document& document) -> encoded_value | ||
| { | ||
| if constexpr (std::is_same_v<Document, std::string>) { | ||
| return { core::utils::to_binary(document), codec_flags::json_common_flags }; | ||
| } else { | ||
| return { std::move(document), codec_flags::json_common_flags }; | ||
| } | ||
| } | ||
|
|
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| template<typename Document, std::enable_if_t<std::is_same_v<Document, std::string> || std::is_same_v<Document, binary>, bool> = true> | ||
| static auto decode(const encoded_value& encoded) -> Document | ||
| { | ||
| if (!codec_flags::has_common_flags(encoded.flags, codec_flags::json_common_flags)) { | ||
| throw std::system_error(errc::common::decoding_failure, | ||
| "raw_json_transcoder expects document to have JSON common flags, flags=" + | ||
| std::to_string(encoded.flags)); | ||
| } | ||
| if constexpr (std::is_same_v<Document, std::string>) { | ||
| return std::string{ reinterpret_cast<const char*>(encoded.data.data()), encoded.data.size() }; | ||
| } else { | ||
| return encoded.data; | ||
| } | ||
| } | ||
| }; | ||
|
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| #ifndef COUCHBASE_CXX_CLIENT_DOXYGEN | ||
| template<> | ||
| struct is_transcoder<raw_json_transcoder> : public std::true_type { | ||
| }; | ||
| #endif | ||
| } // namespace codec | ||
| } // namespace couchbase |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| /* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */ | ||
| /* | ||
| * Copyright 2024. Couchbase, Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| #pragma once | ||
|
|
||
| #include <couchbase/codec/codec_flags.hxx> | ||
| #include <couchbase/codec/encoded_value.hxx> | ||
| #include <couchbase/codec/transcoder_traits.hxx> | ||
| #include <couchbase/error_codes.hxx> | ||
|
|
||
| #include <cstddef> | ||
| #include <string> | ||
| #include <string_view> | ||
| #include <type_traits> | ||
| #include <vector> | ||
|
|
||
| namespace couchbase | ||
| { | ||
| #ifndef COUCHBASE_CXX_CLIENT_DOXYGEN | ||
| namespace core::utils | ||
| { | ||
| std::vector<std::byte> | ||
| to_binary(std::string_view value) noexcept; | ||
| } // namespace core::utils | ||
| #endif | ||
|
|
||
| namespace codec | ||
| { | ||
| class raw_string_transcoder | ||
| { | ||
| public: | ||
| using document_type = std::string; | ||
|
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| static auto encode(document_type document) -> encoded_value | ||
| { | ||
| return { core::utils::to_binary(document), codec_flags::string_common_flags }; | ||
| } | ||
|
|
||
| template<typename Document = document_type, std::enable_if_t<std::is_same_v<Document, document_type>, bool> = true> | ||
| static auto decode(const encoded_value& encoded) -> Document | ||
| { | ||
| if (!codec_flags::has_common_flags(encoded.flags, codec_flags::string_common_flags)) { | ||
| throw std::system_error(errc::common::decoding_failure, | ||
| "raw_string_transcoder expects document to have STRING common flags, flags=" + | ||
| std::to_string(encoded.flags)); | ||
| } | ||
|
|
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| return std::string{ reinterpret_cast<const char*>(encoded.data.data()), encoded.data.size() }; | ||
| } | ||
| }; | ||
|
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| #ifndef COUCHBASE_CXX_CLIENT_DOXYGEN | ||
| template<> | ||
| struct is_transcoder<raw_string_transcoder> : public std::true_type { | ||
| }; | ||
| #endif | ||
| } // namespace codec | ||
| } // namespace couchbase |
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